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<FONT color="green">001</FONT>    /*<a name="line.1"></a>
<FONT color="green">002</FONT>     * Licensed to the Apache Software Foundation (ASF) under one or more<a name="line.2"></a>
<FONT color="green">003</FONT>     * contributor license agreements.  See the NOTICE file distributed with<a name="line.3"></a>
<FONT color="green">004</FONT>     * this work for additional information regarding copyright ownership.<a name="line.4"></a>
<FONT color="green">005</FONT>     * The ASF licenses this file to You under the Apache License, Version 2.0<a name="line.5"></a>
<FONT color="green">006</FONT>     * (the "License"); you may not use this file except in compliance with<a name="line.6"></a>
<FONT color="green">007</FONT>     * the License.  You may obtain a copy of the License at<a name="line.7"></a>
<FONT color="green">008</FONT>     *<a name="line.8"></a>
<FONT color="green">009</FONT>     *     http://www.apache.org/licenses/LICENSE-2.0<a name="line.9"></a>
<FONT color="green">010</FONT>     *<a name="line.10"></a>
<FONT color="green">011</FONT>     * Unless required by applicable law or agreed to in writing, software<a name="line.11"></a>
<FONT color="green">012</FONT>     * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.12"></a>
<FONT color="green">013</FONT>     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.13"></a>
<FONT color="green">014</FONT>     * See the License for the specific language governing permissions and<a name="line.14"></a>
<FONT color="green">015</FONT>     * limitations under the License.<a name="line.15"></a>
<FONT color="green">016</FONT>     */<a name="line.16"></a>
<FONT color="green">017</FONT>    <a name="line.17"></a>
<FONT color="green">018</FONT>    package org.apache.commons.configuration;<a name="line.18"></a>
<FONT color="green">019</FONT>    <a name="line.19"></a>
<FONT color="green">020</FONT>    import java.util.ArrayList;<a name="line.20"></a>
<FONT color="green">021</FONT>    import java.util.Collection;<a name="line.21"></a>
<FONT color="green">022</FONT>    import java.util.Iterator;<a name="line.22"></a>
<FONT color="green">023</FONT>    import java.util.LinkedHashSet;<a name="line.23"></a>
<FONT color="green">024</FONT>    import java.util.LinkedList;<a name="line.24"></a>
<FONT color="green">025</FONT>    import java.util.List;<a name="line.25"></a>
<FONT color="green">026</FONT>    import java.util.ListIterator;<a name="line.26"></a>
<FONT color="green">027</FONT>    import java.util.Set;<a name="line.27"></a>
<FONT color="green">028</FONT>    <a name="line.28"></a>
<FONT color="green">029</FONT>    /**<a name="line.29"></a>
<FONT color="green">030</FONT>     * &lt;p&gt;{@code CompositeConfiguration} allows you to add multiple {@code Configuration}<a name="line.30"></a>
<FONT color="green">031</FONT>     * objects to an aggregated configuration. If you add Configuration1, and then Configuration2,<a name="line.31"></a>
<FONT color="green">032</FONT>     * any properties shared will mean that the value defined by Configuration1<a name="line.32"></a>
<FONT color="green">033</FONT>     * will be returned. If Configuration1 doesn't have the property, then<a name="line.33"></a>
<FONT color="green">034</FONT>     * Configuration2 will be checked. You can add multiple different types or the<a name="line.34"></a>
<FONT color="green">035</FONT>     * same type of properties file.&lt;/p&gt;<a name="line.35"></a>
<FONT color="green">036</FONT>     * &lt;p&gt;When querying properties the order in which child configurations have been<a name="line.36"></a>
<FONT color="green">037</FONT>     * added is relevant. To deal with property updates, a so-called &lt;em&gt;in-memory<a name="line.37"></a>
<FONT color="green">038</FONT>     * configuration&lt;/em&gt; is used. Per default, such a configuration is created<a name="line.38"></a>
<FONT color="green">039</FONT>     * automatically. All property writes target this special configuration. There<a name="line.39"></a>
<FONT color="green">040</FONT>     * are constructors which allow you to provide a specific in-memory configuration.<a name="line.40"></a>
<FONT color="green">041</FONT>     * If used that way, the in-memory configuration is always the last one in the<a name="line.41"></a>
<FONT color="green">042</FONT>     * list of child configurations. This means that for query operations all other<a name="line.42"></a>
<FONT color="green">043</FONT>     * configurations take precedence.&lt;/p&gt;<a name="line.43"></a>
<FONT color="green">044</FONT>     * &lt;p&gt;Alternatively it is possible to mark a child configuration as in-memory<a name="line.44"></a>
<FONT color="green">045</FONT>     * configuration when it is added. In this case the treatment of the in-memory<a name="line.45"></a>
<FONT color="green">046</FONT>     * configuration is slightly different: it remains in the list of child<a name="line.46"></a>
<FONT color="green">047</FONT>     * configurations at the position it was added, i.e. its priority for property<a name="line.47"></a>
<FONT color="green">048</FONT>     * queries can be defined by adding the child configurations in the correct<a name="line.48"></a>
<FONT color="green">049</FONT>     * order.&lt;/p&gt;<a name="line.49"></a>
<FONT color="green">050</FONT>     *<a name="line.50"></a>
<FONT color="green">051</FONT>     * @author &lt;a href="mailto:epugh@upstate.com"&gt;Eric Pugh&lt;/a&gt;<a name="line.51"></a>
<FONT color="green">052</FONT>     * @author &lt;a href="mailto:hps@intermeta.de"&gt;Henning P. Schmiedehausen&lt;/a&gt;<a name="line.52"></a>
<FONT color="green">053</FONT>     * @version $Id: CompositeConfiguration.java 1233058 2012-01-18 20:49:12Z oheger $<a name="line.53"></a>
<FONT color="green">054</FONT>     */<a name="line.54"></a>
<FONT color="green">055</FONT>    public class CompositeConfiguration extends AbstractConfiguration<a name="line.55"></a>
<FONT color="green">056</FONT>    implements Cloneable<a name="line.56"></a>
<FONT color="green">057</FONT>    {<a name="line.57"></a>
<FONT color="green">058</FONT>        /** List holding all the configuration */<a name="line.58"></a>
<FONT color="green">059</FONT>        private List&lt;Configuration&gt; configList = new LinkedList&lt;Configuration&gt;();<a name="line.59"></a>
<FONT color="green">060</FONT>    <a name="line.60"></a>
<FONT color="green">061</FONT>        /**<a name="line.61"></a>
<FONT color="green">062</FONT>         * Configuration that holds in memory stuff.  Inserted as first so any<a name="line.62"></a>
<FONT color="green">063</FONT>         * setProperty() override anything else added.<a name="line.63"></a>
<FONT color="green">064</FONT>         */<a name="line.64"></a>
<FONT color="green">065</FONT>        private Configuration inMemoryConfiguration;<a name="line.65"></a>
<FONT color="green">066</FONT>    <a name="line.66"></a>
<FONT color="green">067</FONT>        /**<a name="line.67"></a>
<FONT color="green">068</FONT>         * Stores a flag whether the current in-memory configuration is also a<a name="line.68"></a>
<FONT color="green">069</FONT>         * child configuration.<a name="line.69"></a>
<FONT color="green">070</FONT>         */<a name="line.70"></a>
<FONT color="green">071</FONT>        private boolean inMemoryConfigIsChild;<a name="line.71"></a>
<FONT color="green">072</FONT>    <a name="line.72"></a>
<FONT color="green">073</FONT>        /**<a name="line.73"></a>
<FONT color="green">074</FONT>         * Creates an empty CompositeConfiguration object which can then<a name="line.74"></a>
<FONT color="green">075</FONT>         * be added some other Configuration files<a name="line.75"></a>
<FONT color="green">076</FONT>         */<a name="line.76"></a>
<FONT color="green">077</FONT>        public CompositeConfiguration()<a name="line.77"></a>
<FONT color="green">078</FONT>        {<a name="line.78"></a>
<FONT color="green">079</FONT>            clear();<a name="line.79"></a>
<FONT color="green">080</FONT>        }<a name="line.80"></a>
<FONT color="green">081</FONT>    <a name="line.81"></a>
<FONT color="green">082</FONT>        /**<a name="line.82"></a>
<FONT color="green">083</FONT>         * Creates a CompositeConfiguration object with a specified &lt;em&gt;in-memory<a name="line.83"></a>
<FONT color="green">084</FONT>         * configuration&lt;/em&gt;. This configuration will store any changes made to the<a name="line.84"></a>
<FONT color="green">085</FONT>         * {@code CompositeConfiguration}. Note: Use this constructor if you want to<a name="line.85"></a>
<FONT color="green">086</FONT>         * set a special type of in-memory configuration. If you have a<a name="line.86"></a>
<FONT color="green">087</FONT>         * configuration which should act as both a child configuration and as<a name="line.87"></a>
<FONT color="green">088</FONT>         * in-memory configuration, use<a name="line.88"></a>
<FONT color="green">089</FONT>         * {@link #addConfiguration(Configuration, boolean)} with a value of<a name="line.89"></a>
<FONT color="green">090</FONT>         * &lt;b&gt;true&lt;/b&gt; instead.<a name="line.90"></a>
<FONT color="green">091</FONT>         *<a name="line.91"></a>
<FONT color="green">092</FONT>         * @param inMemoryConfiguration the in memory configuration to use<a name="line.92"></a>
<FONT color="green">093</FONT>         */<a name="line.93"></a>
<FONT color="green">094</FONT>        public CompositeConfiguration(Configuration inMemoryConfiguration)<a name="line.94"></a>
<FONT color="green">095</FONT>        {<a name="line.95"></a>
<FONT color="green">096</FONT>            configList.clear();<a name="line.96"></a>
<FONT color="green">097</FONT>            this.inMemoryConfiguration = inMemoryConfiguration;<a name="line.97"></a>
<FONT color="green">098</FONT>            configList.add(inMemoryConfiguration);<a name="line.98"></a>
<FONT color="green">099</FONT>        }<a name="line.99"></a>
<FONT color="green">100</FONT>    <a name="line.100"></a>
<FONT color="green">101</FONT>        /**<a name="line.101"></a>
<FONT color="green">102</FONT>         * Create a CompositeConfiguration with an empty in memory configuration<a name="line.102"></a>
<FONT color="green">103</FONT>         * and adds the collection of configurations specified.<a name="line.103"></a>
<FONT color="green">104</FONT>         *<a name="line.104"></a>
<FONT color="green">105</FONT>         * @param configurations the collection of configurations to add<a name="line.105"></a>
<FONT color="green">106</FONT>         */<a name="line.106"></a>
<FONT color="green">107</FONT>        public CompositeConfiguration(Collection&lt;? extends Configuration&gt; configurations)<a name="line.107"></a>
<FONT color="green">108</FONT>        {<a name="line.108"></a>
<FONT color="green">109</FONT>            this(new BaseConfiguration(), configurations);<a name="line.109"></a>
<FONT color="green">110</FONT>        }<a name="line.110"></a>
<FONT color="green">111</FONT>    <a name="line.111"></a>
<FONT color="green">112</FONT>        /**<a name="line.112"></a>
<FONT color="green">113</FONT>         * Creates a CompositeConfiguration with a specified &lt;em&gt;in-memory<a name="line.113"></a>
<FONT color="green">114</FONT>         * configuration&lt;/em&gt;, and then adds the given collection of configurations.<a name="line.114"></a>
<FONT color="green">115</FONT>         *<a name="line.115"></a>
<FONT color="green">116</FONT>         * @param inMemoryConfiguration the in memory configuration to use<a name="line.116"></a>
<FONT color="green">117</FONT>         * @param configurations        the collection of configurations to add<a name="line.117"></a>
<FONT color="green">118</FONT>         * @see #CompositeConfiguration(Configuration)<a name="line.118"></a>
<FONT color="green">119</FONT>         */<a name="line.119"></a>
<FONT color="green">120</FONT>        public CompositeConfiguration(Configuration inMemoryConfiguration,<a name="line.120"></a>
<FONT color="green">121</FONT>                Collection&lt;? extends Configuration&gt; configurations)<a name="line.121"></a>
<FONT color="green">122</FONT>        {<a name="line.122"></a>
<FONT color="green">123</FONT>            this(inMemoryConfiguration);<a name="line.123"></a>
<FONT color="green">124</FONT>    <a name="line.124"></a>
<FONT color="green">125</FONT>            if (configurations != null)<a name="line.125"></a>
<FONT color="green">126</FONT>            {<a name="line.126"></a>
<FONT color="green">127</FONT>                for (Configuration c : configurations)<a name="line.127"></a>
<FONT color="green">128</FONT>                {<a name="line.128"></a>
<FONT color="green">129</FONT>                    addConfiguration(c);<a name="line.129"></a>
<FONT color="green">130</FONT>                }<a name="line.130"></a>
<FONT color="green">131</FONT>            }<a name="line.131"></a>
<FONT color="green">132</FONT>        }<a name="line.132"></a>
<FONT color="green">133</FONT>    <a name="line.133"></a>
<FONT color="green">134</FONT>        /**<a name="line.134"></a>
<FONT color="green">135</FONT>         * Add a configuration.<a name="line.135"></a>
<FONT color="green">136</FONT>         *<a name="line.136"></a>
<FONT color="green">137</FONT>         * @param config the configuration to add<a name="line.137"></a>
<FONT color="green">138</FONT>         */<a name="line.138"></a>
<FONT color="green">139</FONT>        public void addConfiguration(Configuration config)<a name="line.139"></a>
<FONT color="green">140</FONT>        {<a name="line.140"></a>
<FONT color="green">141</FONT>            addConfiguration(config, false);<a name="line.141"></a>
<FONT color="green">142</FONT>        }<a name="line.142"></a>
<FONT color="green">143</FONT>    <a name="line.143"></a>
<FONT color="green">144</FONT>        /**<a name="line.144"></a>
<FONT color="green">145</FONT>         * Adds a child configuration and optionally makes it the &lt;em&gt;in-memory<a name="line.145"></a>
<FONT color="green">146</FONT>         * configuration&lt;/em&gt;. This means that all future property write operations<a name="line.146"></a>
<FONT color="green">147</FONT>         * are executed on this configuration. Note that the current in-memory<a name="line.147"></a>
<FONT color="green">148</FONT>         * configuration is replaced by the new one. If it was created automatically<a name="line.148"></a>
<FONT color="green">149</FONT>         * or passed to the constructor, it is removed from the list of child<a name="line.149"></a>
<FONT color="green">150</FONT>         * configurations! Otherwise, it stays in the list of child configurations<a name="line.150"></a>
<FONT color="green">151</FONT>         * at its current position, but it passes its role as in-memory<a name="line.151"></a>
<FONT color="green">152</FONT>         * configuration to the new one.<a name="line.152"></a>
<FONT color="green">153</FONT>         *<a name="line.153"></a>
<FONT color="green">154</FONT>         * @param config the configuration to be added<a name="line.154"></a>
<FONT color="green">155</FONT>         * @param asInMemory &lt;b&gt;true&lt;/b&gt; if this configuration becomes the new<a name="line.155"></a>
<FONT color="green">156</FONT>         *        &lt;em&gt;in-memory&lt;/em&gt; configuration, &lt;b&gt;false&lt;/b&gt; otherwise<a name="line.156"></a>
<FONT color="green">157</FONT>         * @since 1.8<a name="line.157"></a>
<FONT color="green">158</FONT>         */<a name="line.158"></a>
<FONT color="green">159</FONT>        public void addConfiguration(Configuration config, boolean asInMemory)<a name="line.159"></a>
<FONT color="green">160</FONT>        {<a name="line.160"></a>
<FONT color="green">161</FONT>            if (!configList.contains(config))<a name="line.161"></a>
<FONT color="green">162</FONT>            {<a name="line.162"></a>
<FONT color="green">163</FONT>                if (asInMemory)<a name="line.163"></a>
<FONT color="green">164</FONT>                {<a name="line.164"></a>
<FONT color="green">165</FONT>                    replaceInMemoryConfiguration(config);<a name="line.165"></a>
<FONT color="green">166</FONT>                    inMemoryConfigIsChild = true;<a name="line.166"></a>
<FONT color="green">167</FONT>                }<a name="line.167"></a>
<FONT color="green">168</FONT>    <a name="line.168"></a>
<FONT color="green">169</FONT>                if (!inMemoryConfigIsChild)<a name="line.169"></a>
<FONT color="green">170</FONT>                {<a name="line.170"></a>
<FONT color="green">171</FONT>                    // As the inMemoryConfiguration contains all manually added<a name="line.171"></a>
<FONT color="green">172</FONT>                    // keys, we must make sure that it is always last. "Normal", non<a name="line.172"></a>
<FONT color="green">173</FONT>                    // composed configurations add their keys at the end of the<a name="line.173"></a>
<FONT color="green">174</FONT>                    // configuration and we want to mimic this behavior.<a name="line.174"></a>
<FONT color="green">175</FONT>                    configList.add(configList.indexOf(inMemoryConfiguration),<a name="line.175"></a>
<FONT color="green">176</FONT>                            config);<a name="line.176"></a>
<FONT color="green">177</FONT>                }<a name="line.177"></a>
<FONT color="green">178</FONT>                else<a name="line.178"></a>
<FONT color="green">179</FONT>                {<a name="line.179"></a>
<FONT color="green">180</FONT>                    // However, if the in-memory configuration is a regular child,<a name="line.180"></a>
<FONT color="green">181</FONT>                    // only the order in which child configurations are added is<a name="line.181"></a>
<FONT color="green">182</FONT>                    // relevant<a name="line.182"></a>
<FONT color="green">183</FONT>                    configList.add(config);<a name="line.183"></a>
<FONT color="green">184</FONT>                }<a name="line.184"></a>
<FONT color="green">185</FONT>    <a name="line.185"></a>
<FONT color="green">186</FONT>                if (config instanceof AbstractConfiguration)<a name="line.186"></a>
<FONT color="green">187</FONT>                {<a name="line.187"></a>
<FONT color="green">188</FONT>                    ((AbstractConfiguration) config)<a name="line.188"></a>
<FONT color="green">189</FONT>                            .setThrowExceptionOnMissing(isThrowExceptionOnMissing());<a name="line.189"></a>
<FONT color="green">190</FONT>                }<a name="line.190"></a>
<FONT color="green">191</FONT>            }<a name="line.191"></a>
<FONT color="green">192</FONT>        }<a name="line.192"></a>
<FONT color="green">193</FONT>    <a name="line.193"></a>
<FONT color="green">194</FONT>        /**<a name="line.194"></a>
<FONT color="green">195</FONT>         * Remove a configuration. The in memory configuration cannot be removed.<a name="line.195"></a>
<FONT color="green">196</FONT>         *<a name="line.196"></a>
<FONT color="green">197</FONT>         * @param config The configuration to remove<a name="line.197"></a>
<FONT color="green">198</FONT>         */<a name="line.198"></a>
<FONT color="green">199</FONT>        public void removeConfiguration(Configuration config)<a name="line.199"></a>
<FONT color="green">200</FONT>        {<a name="line.200"></a>
<FONT color="green">201</FONT>            // Make sure that you can't remove the inMemoryConfiguration from<a name="line.201"></a>
<FONT color="green">202</FONT>            // the CompositeConfiguration object<a name="line.202"></a>
<FONT color="green">203</FONT>            if (!config.equals(inMemoryConfiguration))<a name="line.203"></a>
<FONT color="green">204</FONT>            {<a name="line.204"></a>
<FONT color="green">205</FONT>                configList.remove(config);<a name="line.205"></a>
<FONT color="green">206</FONT>            }<a name="line.206"></a>
<FONT color="green">207</FONT>        }<a name="line.207"></a>
<FONT color="green">208</FONT>    <a name="line.208"></a>
<FONT color="green">209</FONT>        /**<a name="line.209"></a>
<FONT color="green">210</FONT>         * Return the number of configurations.<a name="line.210"></a>
<FONT color="green">211</FONT>         *<a name="line.211"></a>
<FONT color="green">212</FONT>         * @return the number of configuration<a name="line.212"></a>
<FONT color="green">213</FONT>         */<a name="line.213"></a>
<FONT color="green">214</FONT>        public int getNumberOfConfigurations()<a name="line.214"></a>
<FONT color="green">215</FONT>        {<a name="line.215"></a>
<FONT color="green">216</FONT>            return configList.size();<a name="line.216"></a>
<FONT color="green">217</FONT>        }<a name="line.217"></a>
<FONT color="green">218</FONT>    <a name="line.218"></a>
<FONT color="green">219</FONT>        /**<a name="line.219"></a>
<FONT color="green">220</FONT>         * Removes all child configurations and reinitializes the &lt;em&gt;in-memory<a name="line.220"></a>
<FONT color="green">221</FONT>         * configuration&lt;/em&gt;. &lt;strong&gt;Attention:&lt;/strong&gt; A new in-memory<a name="line.221"></a>
<FONT color="green">222</FONT>         * configuration is created; the old one is lost.<a name="line.222"></a>
<FONT color="green">223</FONT>         */<a name="line.223"></a>
<FONT color="green">224</FONT>        @Override<a name="line.224"></a>
<FONT color="green">225</FONT>        public void clear()<a name="line.225"></a>
<FONT color="green">226</FONT>        {<a name="line.226"></a>
<FONT color="green">227</FONT>            configList.clear();<a name="line.227"></a>
<FONT color="green">228</FONT>            // recreate the in memory configuration<a name="line.228"></a>
<FONT color="green">229</FONT>            inMemoryConfiguration = new BaseConfiguration();<a name="line.229"></a>
<FONT color="green">230</FONT>            ((BaseConfiguration) inMemoryConfiguration).setThrowExceptionOnMissing(isThrowExceptionOnMissing());<a name="line.230"></a>
<FONT color="green">231</FONT>            ((BaseConfiguration) inMemoryConfiguration).setListDelimiter(getListDelimiter());<a name="line.231"></a>
<FONT color="green">232</FONT>            ((BaseConfiguration) inMemoryConfiguration).setDelimiterParsingDisabled(isDelimiterParsingDisabled());<a name="line.232"></a>
<FONT color="green">233</FONT>            configList.add(inMemoryConfiguration);<a name="line.233"></a>
<FONT color="green">234</FONT>            inMemoryConfigIsChild = false;<a name="line.234"></a>
<FONT color="green">235</FONT>        }<a name="line.235"></a>
<FONT color="green">236</FONT>    <a name="line.236"></a>
<FONT color="green">237</FONT>        /**<a name="line.237"></a>
<FONT color="green">238</FONT>         * Add this property to the inmemory Configuration.<a name="line.238"></a>
<FONT color="green">239</FONT>         *<a name="line.239"></a>
<FONT color="green">240</FONT>         * @param key The Key to add the property to.<a name="line.240"></a>
<FONT color="green">241</FONT>         * @param token The Value to add.<a name="line.241"></a>
<FONT color="green">242</FONT>         */<a name="line.242"></a>
<FONT color="green">243</FONT>        @Override<a name="line.243"></a>
<FONT color="green">244</FONT>        protected void addPropertyDirect(String key, Object token)<a name="line.244"></a>
<FONT color="green">245</FONT>        {<a name="line.245"></a>
<FONT color="green">246</FONT>            inMemoryConfiguration.addProperty(key, token);<a name="line.246"></a>
<FONT color="green">247</FONT>        }<a name="line.247"></a>
<FONT color="green">248</FONT>    <a name="line.248"></a>
<FONT color="green">249</FONT>        /**<a name="line.249"></a>
<FONT color="green">250</FONT>         * Read property from underlying composite<a name="line.250"></a>
<FONT color="green">251</FONT>         *<a name="line.251"></a>
<FONT color="green">252</FONT>         * @param key key to use for mapping<a name="line.252"></a>
<FONT color="green">253</FONT>         *<a name="line.253"></a>
<FONT color="green">254</FONT>         * @return object associated with the given configuration key.<a name="line.254"></a>
<FONT color="green">255</FONT>         */<a name="line.255"></a>
<FONT color="green">256</FONT>        public Object getProperty(String key)<a name="line.256"></a>
<FONT color="green">257</FONT>        {<a name="line.257"></a>
<FONT color="green">258</FONT>            Configuration firstMatchingConfiguration = null;<a name="line.258"></a>
<FONT color="green">259</FONT>            for (Configuration config : configList)<a name="line.259"></a>
<FONT color="green">260</FONT>            {<a name="line.260"></a>
<FONT color="green">261</FONT>                if (config.containsKey(key))<a name="line.261"></a>
<FONT color="green">262</FONT>                {<a name="line.262"></a>
<FONT color="green">263</FONT>                    firstMatchingConfiguration = config;<a name="line.263"></a>
<FONT color="green">264</FONT>                    break;<a name="line.264"></a>
<FONT color="green">265</FONT>                }<a name="line.265"></a>
<FONT color="green">266</FONT>            }<a name="line.266"></a>
<FONT color="green">267</FONT>    <a name="line.267"></a>
<FONT color="green">268</FONT>            if (firstMatchingConfiguration != null)<a name="line.268"></a>
<FONT color="green">269</FONT>            {<a name="line.269"></a>
<FONT color="green">270</FONT>                return firstMatchingConfiguration.getProperty(key);<a name="line.270"></a>
<FONT color="green">271</FONT>            }<a name="line.271"></a>
<FONT color="green">272</FONT>            else<a name="line.272"></a>
<FONT color="green">273</FONT>            {<a name="line.273"></a>
<FONT color="green">274</FONT>                return null;<a name="line.274"></a>
<FONT color="green">275</FONT>            }<a name="line.275"></a>
<FONT color="green">276</FONT>        }<a name="line.276"></a>
<FONT color="green">277</FONT>    <a name="line.277"></a>
<FONT color="green">278</FONT>        public Iterator&lt;String&gt; getKeys()<a name="line.278"></a>
<FONT color="green">279</FONT>        {<a name="line.279"></a>
<FONT color="green">280</FONT>            Set&lt;String&gt; keys = new LinkedHashSet&lt;String&gt;();<a name="line.280"></a>
<FONT color="green">281</FONT>            for (Configuration config : configList)<a name="line.281"></a>
<FONT color="green">282</FONT>            {<a name="line.282"></a>
<FONT color="green">283</FONT>                for (Iterator&lt;String&gt; it = config.getKeys(); it.hasNext();)<a name="line.283"></a>
<FONT color="green">284</FONT>                {<a name="line.284"></a>
<FONT color="green">285</FONT>                    keys.add(it.next());<a name="line.285"></a>
<FONT color="green">286</FONT>                }<a name="line.286"></a>
<FONT color="green">287</FONT>            }<a name="line.287"></a>
<FONT color="green">288</FONT>    <a name="line.288"></a>
<FONT color="green">289</FONT>            return keys.iterator();<a name="line.289"></a>
<FONT color="green">290</FONT>        }<a name="line.290"></a>
<FONT color="green">291</FONT>    <a name="line.291"></a>
<FONT color="green">292</FONT>        @Override<a name="line.292"></a>
<FONT color="green">293</FONT>        public Iterator&lt;String&gt; getKeys(String key)<a name="line.293"></a>
<FONT color="green">294</FONT>        {<a name="line.294"></a>
<FONT color="green">295</FONT>            Set&lt;String&gt; keys = new LinkedHashSet&lt;String&gt;();<a name="line.295"></a>
<FONT color="green">296</FONT>            for (Configuration config : configList)<a name="line.296"></a>
<FONT color="green">297</FONT>            {<a name="line.297"></a>
<FONT color="green">298</FONT>                for (Iterator&lt;String&gt; it = config.getKeys(key); it.hasNext();)<a name="line.298"></a>
<FONT color="green">299</FONT>                {<a name="line.299"></a>
<FONT color="green">300</FONT>                    keys.add(it.next());<a name="line.300"></a>
<FONT color="green">301</FONT>                }<a name="line.301"></a>
<FONT color="green">302</FONT>            }<a name="line.302"></a>
<FONT color="green">303</FONT>    <a name="line.303"></a>
<FONT color="green">304</FONT>            return keys.iterator();<a name="line.304"></a>
<FONT color="green">305</FONT>        }<a name="line.305"></a>
<FONT color="green">306</FONT>    <a name="line.306"></a>
<FONT color="green">307</FONT>        public boolean isEmpty()<a name="line.307"></a>
<FONT color="green">308</FONT>        {<a name="line.308"></a>
<FONT color="green">309</FONT>            for (Configuration config : configList)<a name="line.309"></a>
<FONT color="green">310</FONT>            {<a name="line.310"></a>
<FONT color="green">311</FONT>                if (!config.isEmpty())<a name="line.311"></a>
<FONT color="green">312</FONT>                {<a name="line.312"></a>
<FONT color="green">313</FONT>                    return false;<a name="line.313"></a>
<FONT color="green">314</FONT>                }<a name="line.314"></a>
<FONT color="green">315</FONT>            }<a name="line.315"></a>
<FONT color="green">316</FONT>    <a name="line.316"></a>
<FONT color="green">317</FONT>            return true;<a name="line.317"></a>
<FONT color="green">318</FONT>        }<a name="line.318"></a>
<FONT color="green">319</FONT>    <a name="line.319"></a>
<FONT color="green">320</FONT>        @Override<a name="line.320"></a>
<FONT color="green">321</FONT>        protected void clearPropertyDirect(String key)<a name="line.321"></a>
<FONT color="green">322</FONT>        {<a name="line.322"></a>
<FONT color="green">323</FONT>            for (Configuration config : configList)<a name="line.323"></a>
<FONT color="green">324</FONT>            {<a name="line.324"></a>
<FONT color="green">325</FONT>                config.clearProperty(key);<a name="line.325"></a>
<FONT color="green">326</FONT>            }<a name="line.326"></a>
<FONT color="green">327</FONT>        }<a name="line.327"></a>
<FONT color="green">328</FONT>    <a name="line.328"></a>
<FONT color="green">329</FONT>        public boolean containsKey(String key)<a name="line.329"></a>
<FONT color="green">330</FONT>        {<a name="line.330"></a>
<FONT color="green">331</FONT>            for (Configuration config : configList)<a name="line.331"></a>
<FONT color="green">332</FONT>            {<a name="line.332"></a>
<FONT color="green">333</FONT>                if (config.containsKey(key))<a name="line.333"></a>
<FONT color="green">334</FONT>                {<a name="line.334"></a>
<FONT color="green">335</FONT>                    return true;<a name="line.335"></a>
<FONT color="green">336</FONT>                }<a name="line.336"></a>
<FONT color="green">337</FONT>            }<a name="line.337"></a>
<FONT color="green">338</FONT>            return false;<a name="line.338"></a>
<FONT color="green">339</FONT>        }<a name="line.339"></a>
<FONT color="green">340</FONT>    <a name="line.340"></a>
<FONT color="green">341</FONT>        @Override<a name="line.341"></a>
<FONT color="green">342</FONT>        public List&lt;Object&gt; getList(String key, List&lt;Object&gt; defaultValue)<a name="line.342"></a>
<FONT color="green">343</FONT>        {<a name="line.343"></a>
<FONT color="green">344</FONT>            List&lt;Object&gt; list = new ArrayList&lt;Object&gt;();<a name="line.344"></a>
<FONT color="green">345</FONT>    <a name="line.345"></a>
<FONT color="green">346</FONT>            // add all elements from the first configuration containing the requested key<a name="line.346"></a>
<FONT color="green">347</FONT>            Iterator&lt;Configuration&gt; it = configList.iterator();<a name="line.347"></a>
<FONT color="green">348</FONT>            while (it.hasNext() &amp;&amp; list.isEmpty())<a name="line.348"></a>
<FONT color="green">349</FONT>            {<a name="line.349"></a>
<FONT color="green">350</FONT>                Configuration config = it.next();<a name="line.350"></a>
<FONT color="green">351</FONT>                if (config != inMemoryConfiguration &amp;&amp; config.containsKey(key))<a name="line.351"></a>
<FONT color="green">352</FONT>                {<a name="line.352"></a>
<FONT color="green">353</FONT>                    appendListProperty(list, config, key);<a name="line.353"></a>
<FONT color="green">354</FONT>                }<a name="line.354"></a>
<FONT color="green">355</FONT>            }<a name="line.355"></a>
<FONT color="green">356</FONT>    <a name="line.356"></a>
<FONT color="green">357</FONT>            // add all elements from the in memory configuration<a name="line.357"></a>
<FONT color="green">358</FONT>            appendListProperty(list, inMemoryConfiguration, key);<a name="line.358"></a>
<FONT color="green">359</FONT>    <a name="line.359"></a>
<FONT color="green">360</FONT>            if (list.isEmpty())<a name="line.360"></a>
<FONT color="green">361</FONT>            {<a name="line.361"></a>
<FONT color="green">362</FONT>                return defaultValue;<a name="line.362"></a>
<FONT color="green">363</FONT>            }<a name="line.363"></a>
<FONT color="green">364</FONT>    <a name="line.364"></a>
<FONT color="green">365</FONT>            ListIterator&lt;Object&gt; lit = list.listIterator();<a name="line.365"></a>
<FONT color="green">366</FONT>            while (lit.hasNext())<a name="line.366"></a>
<FONT color="green">367</FONT>            {<a name="line.367"></a>
<FONT color="green">368</FONT>                lit.set(interpolate(lit.next()));<a name="line.368"></a>
<FONT color="green">369</FONT>            }<a name="line.369"></a>
<FONT color="green">370</FONT>    <a name="line.370"></a>
<FONT color="green">371</FONT>            return list;<a name="line.371"></a>
<FONT color="green">372</FONT>        }<a name="line.372"></a>
<FONT color="green">373</FONT>    <a name="line.373"></a>
<FONT color="green">374</FONT>        @Override<a name="line.374"></a>
<FONT color="green">375</FONT>        public String[] getStringArray(String key)<a name="line.375"></a>
<FONT color="green">376</FONT>        {<a name="line.376"></a>
<FONT color="green">377</FONT>            List&lt;Object&gt; list = getList(key);<a name="line.377"></a>
<FONT color="green">378</FONT>    <a name="line.378"></a>
<FONT color="green">379</FONT>            // transform property values into strings<a name="line.379"></a>
<FONT color="green">380</FONT>            String[] tokens = new String[list.size()];<a name="line.380"></a>
<FONT color="green">381</FONT>    <a name="line.381"></a>
<FONT color="green">382</FONT>            for (int i = 0; i &lt; tokens.length; i++)<a name="line.382"></a>
<FONT color="green">383</FONT>            {<a name="line.383"></a>
<FONT color="green">384</FONT>                tokens[i] = String.valueOf(list.get(i));<a name="line.384"></a>
<FONT color="green">385</FONT>            }<a name="line.385"></a>
<FONT color="green">386</FONT>    <a name="line.386"></a>
<FONT color="green">387</FONT>            return tokens;<a name="line.387"></a>
<FONT color="green">388</FONT>        }<a name="line.388"></a>
<FONT color="green">389</FONT>    <a name="line.389"></a>
<FONT color="green">390</FONT>        /**<a name="line.390"></a>
<FONT color="green">391</FONT>         * Return the configuration at the specified index.<a name="line.391"></a>
<FONT color="green">392</FONT>         *<a name="line.392"></a>
<FONT color="green">393</FONT>         * @param index The index of the configuration to retrieve<a name="line.393"></a>
<FONT color="green">394</FONT>         * @return the configuration at this index<a name="line.394"></a>
<FONT color="green">395</FONT>         */<a name="line.395"></a>
<FONT color="green">396</FONT>        public Configuration getConfiguration(int index)<a name="line.396"></a>
<FONT color="green">397</FONT>        {<a name="line.397"></a>
<FONT color="green">398</FONT>            return configList.get(index);<a name="line.398"></a>
<FONT color="green">399</FONT>        }<a name="line.399"></a>
<FONT color="green">400</FONT>    <a name="line.400"></a>
<FONT color="green">401</FONT>        /**<a name="line.401"></a>
<FONT color="green">402</FONT>         * Returns the &amp;quot;in memory configuration&amp;quot;. In this configuration<a name="line.402"></a>
<FONT color="green">403</FONT>         * changes are stored.<a name="line.403"></a>
<FONT color="green">404</FONT>         *<a name="line.404"></a>
<FONT color="green">405</FONT>         * @return the in memory configuration<a name="line.405"></a>
<FONT color="green">406</FONT>         */<a name="line.406"></a>
<FONT color="green">407</FONT>        public Configuration getInMemoryConfiguration()<a name="line.407"></a>
<FONT color="green">408</FONT>        {<a name="line.408"></a>
<FONT color="green">409</FONT>            return inMemoryConfiguration;<a name="line.409"></a>
<FONT color="green">410</FONT>        }<a name="line.410"></a>
<FONT color="green">411</FONT>    <a name="line.411"></a>
<FONT color="green">412</FONT>        /**<a name="line.412"></a>
<FONT color="green">413</FONT>         * Returns a copy of this object. This implementation will create a deep<a name="line.413"></a>
<FONT color="green">414</FONT>         * clone, i.e. all configurations contained in this composite will also be<a name="line.414"></a>
<FONT color="green">415</FONT>         * cloned. This only works if all contained configurations support cloning;<a name="line.415"></a>
<FONT color="green">416</FONT>         * otherwise a runtime exception will be thrown. Registered event handlers<a name="line.416"></a>
<FONT color="green">417</FONT>         * won't get cloned.<a name="line.417"></a>
<FONT color="green">418</FONT>         *<a name="line.418"></a>
<FONT color="green">419</FONT>         * @return the copy<a name="line.419"></a>
<FONT color="green">420</FONT>         * @since 1.3<a name="line.420"></a>
<FONT color="green">421</FONT>         */<a name="line.421"></a>
<FONT color="green">422</FONT>        @Override<a name="line.422"></a>
<FONT color="green">423</FONT>        public Object clone()<a name="line.423"></a>
<FONT color="green">424</FONT>        {<a name="line.424"></a>
<FONT color="green">425</FONT>            try<a name="line.425"></a>
<FONT color="green">426</FONT>            {<a name="line.426"></a>
<FONT color="green">427</FONT>                CompositeConfiguration copy = (CompositeConfiguration) super<a name="line.427"></a>
<FONT color="green">428</FONT>                        .clone();<a name="line.428"></a>
<FONT color="green">429</FONT>                copy.clearConfigurationListeners();<a name="line.429"></a>
<FONT color="green">430</FONT>                copy.configList = new LinkedList&lt;Configuration&gt;();<a name="line.430"></a>
<FONT color="green">431</FONT>                copy.inMemoryConfiguration = ConfigurationUtils<a name="line.431"></a>
<FONT color="green">432</FONT>                        .cloneConfiguration(getInMemoryConfiguration());<a name="line.432"></a>
<FONT color="green">433</FONT>                copy.configList.add(copy.inMemoryConfiguration);<a name="line.433"></a>
<FONT color="green">434</FONT>    <a name="line.434"></a>
<FONT color="green">435</FONT>                for (Configuration config : configList)<a name="line.435"></a>
<FONT color="green">436</FONT>                {<a name="line.436"></a>
<FONT color="green">437</FONT>                    if (config != getInMemoryConfiguration())<a name="line.437"></a>
<FONT color="green">438</FONT>                    {<a name="line.438"></a>
<FONT color="green">439</FONT>                        copy.addConfiguration(ConfigurationUtils<a name="line.439"></a>
<FONT color="green">440</FONT>                                .cloneConfiguration(config));<a name="line.440"></a>
<FONT color="green">441</FONT>                    }<a name="line.441"></a>
<FONT color="green">442</FONT>                }<a name="line.442"></a>
<FONT color="green">443</FONT>    <a name="line.443"></a>
<FONT color="green">444</FONT>                return copy;<a name="line.444"></a>
<FONT color="green">445</FONT>            }<a name="line.445"></a>
<FONT color="green">446</FONT>            catch (CloneNotSupportedException cnex)<a name="line.446"></a>
<FONT color="green">447</FONT>            {<a name="line.447"></a>
<FONT color="green">448</FONT>                // cannot happen<a name="line.448"></a>
<FONT color="green">449</FONT>                throw new ConfigurationRuntimeException(cnex);<a name="line.449"></a>
<FONT color="green">450</FONT>            }<a name="line.450"></a>
<FONT color="green">451</FONT>        }<a name="line.451"></a>
<FONT color="green">452</FONT>    <a name="line.452"></a>
<FONT color="green">453</FONT>        /**<a name="line.453"></a>
<FONT color="green">454</FONT>         * Sets a flag whether added values for string properties should be checked<a name="line.454"></a>
<FONT color="green">455</FONT>         * for the list delimiter. This implementation ensures that the in memory<a name="line.455"></a>
<FONT color="green">456</FONT>         * configuration is correctly initialized.<a name="line.456"></a>
<FONT color="green">457</FONT>         *<a name="line.457"></a>
<FONT color="green">458</FONT>         * @param delimiterParsingDisabled the new value of the flag<a name="line.458"></a>
<FONT color="green">459</FONT>         * @since 1.4<a name="line.459"></a>
<FONT color="green">460</FONT>         */<a name="line.460"></a>
<FONT color="green">461</FONT>        @Override<a name="line.461"></a>
<FONT color="green">462</FONT>        public void setDelimiterParsingDisabled(boolean delimiterParsingDisabled)<a name="line.462"></a>
<FONT color="green">463</FONT>        {<a name="line.463"></a>
<FONT color="green">464</FONT>            if (inMemoryConfiguration instanceof AbstractConfiguration)<a name="line.464"></a>
<FONT color="green">465</FONT>            {<a name="line.465"></a>
<FONT color="green">466</FONT>                ((AbstractConfiguration) inMemoryConfiguration)<a name="line.466"></a>
<FONT color="green">467</FONT>                        .setDelimiterParsingDisabled(delimiterParsingDisabled);<a name="line.467"></a>
<FONT color="green">468</FONT>            }<a name="line.468"></a>
<FONT color="green">469</FONT>            super.setDelimiterParsingDisabled(delimiterParsingDisabled);<a name="line.469"></a>
<FONT color="green">470</FONT>        }<a name="line.470"></a>
<FONT color="green">471</FONT>    <a name="line.471"></a>
<FONT color="green">472</FONT>        /**<a name="line.472"></a>
<FONT color="green">473</FONT>         * Sets the character that is used as list delimiter. This implementation<a name="line.473"></a>
<FONT color="green">474</FONT>         * ensures that the in memory configuration is correctly initialized.<a name="line.474"></a>
<FONT color="green">475</FONT>         *<a name="line.475"></a>
<FONT color="green">476</FONT>         * @param listDelimiter the new list delimiter character<a name="line.476"></a>
<FONT color="green">477</FONT>         * @since 1.4<a name="line.477"></a>
<FONT color="green">478</FONT>         */<a name="line.478"></a>
<FONT color="green">479</FONT>        @Override<a name="line.479"></a>
<FONT color="green">480</FONT>        public void setListDelimiter(char listDelimiter)<a name="line.480"></a>
<FONT color="green">481</FONT>        {<a name="line.481"></a>
<FONT color="green">482</FONT>            if (inMemoryConfiguration instanceof AbstractConfiguration)<a name="line.482"></a>
<FONT color="green">483</FONT>            {<a name="line.483"></a>
<FONT color="green">484</FONT>                ((AbstractConfiguration) inMemoryConfiguration)<a name="line.484"></a>
<FONT color="green">485</FONT>                        .setListDelimiter(listDelimiter);<a name="line.485"></a>
<FONT color="green">486</FONT>            }<a name="line.486"></a>
<FONT color="green">487</FONT>            super.setListDelimiter(listDelimiter);<a name="line.487"></a>
<FONT color="green">488</FONT>        }<a name="line.488"></a>
<FONT color="green">489</FONT>    <a name="line.489"></a>
<FONT color="green">490</FONT>        /**<a name="line.490"></a>
<FONT color="green">491</FONT>         * Returns the configuration source, in which the specified key is defined.<a name="line.491"></a>
<FONT color="green">492</FONT>         * This method will iterate over all existing child configurations and check<a name="line.492"></a>
<FONT color="green">493</FONT>         * whether they contain the specified key. The following constellations are<a name="line.493"></a>
<FONT color="green">494</FONT>         * possible:<a name="line.494"></a>
<FONT color="green">495</FONT>         * &lt;ul&gt;<a name="line.495"></a>
<FONT color="green">496</FONT>         * &lt;li&gt;If exactly one child configuration contains the key, this<a name="line.496"></a>
<FONT color="green">497</FONT>         * configuration is returned as the source configuration. This may be the<a name="line.497"></a>
<FONT color="green">498</FONT>         * &lt;em&gt;in memory configuration&lt;/em&gt; (this has to be explicitly checked by<a name="line.498"></a>
<FONT color="green">499</FONT>         * the calling application).&lt;/li&gt;<a name="line.499"></a>
<FONT color="green">500</FONT>         * &lt;li&gt;If none of the child configurations contain the key, &lt;b&gt;null&lt;/b&gt; is<a name="line.500"></a>
<FONT color="green">501</FONT>         * returned.&lt;/li&gt;<a name="line.501"></a>
<FONT color="green">502</FONT>         * &lt;li&gt;If the key is contained in multiple child configurations or if the<a name="line.502"></a>
<FONT color="green">503</FONT>         * key is &lt;b&gt;null&lt;/b&gt;, a {@code IllegalArgumentException} is thrown.<a name="line.503"></a>
<FONT color="green">504</FONT>         * In this case the source configuration cannot be determined.&lt;/li&gt;<a name="line.504"></a>
<FONT color="green">505</FONT>         * &lt;/ul&gt;<a name="line.505"></a>
<FONT color="green">506</FONT>         *<a name="line.506"></a>
<FONT color="green">507</FONT>         * @param key the key to be checked<a name="line.507"></a>
<FONT color="green">508</FONT>         * @return the source configuration of this key<a name="line.508"></a>
<FONT color="green">509</FONT>         * @throws IllegalArgumentException if the source configuration cannot be<a name="line.509"></a>
<FONT color="green">510</FONT>         * determined<a name="line.510"></a>
<FONT color="green">511</FONT>         * @since 1.5<a name="line.511"></a>
<FONT color="green">512</FONT>         */<a name="line.512"></a>
<FONT color="green">513</FONT>        public Configuration getSource(String key)<a name="line.513"></a>
<FONT color="green">514</FONT>        {<a name="line.514"></a>
<FONT color="green">515</FONT>            if (key == null)<a name="line.515"></a>
<FONT color="green">516</FONT>            {<a name="line.516"></a>
<FONT color="green">517</FONT>                throw new IllegalArgumentException("Key must not be null!");<a name="line.517"></a>
<FONT color="green">518</FONT>            }<a name="line.518"></a>
<FONT color="green">519</FONT>    <a name="line.519"></a>
<FONT color="green">520</FONT>            Configuration source = null;<a name="line.520"></a>
<FONT color="green">521</FONT>            for (Configuration conf : configList)<a name="line.521"></a>
<FONT color="green">522</FONT>            {<a name="line.522"></a>
<FONT color="green">523</FONT>                if (conf.containsKey(key))<a name="line.523"></a>
<FONT color="green">524</FONT>                {<a name="line.524"></a>
<FONT color="green">525</FONT>                    if (source != null)<a name="line.525"></a>
<FONT color="green">526</FONT>                    {<a name="line.526"></a>
<FONT color="green">527</FONT>                        throw new IllegalArgumentException("The key " + key<a name="line.527"></a>
<FONT color="green">528</FONT>                                + " is defined by multiple sources!");<a name="line.528"></a>
<FONT color="green">529</FONT>                    }<a name="line.529"></a>
<FONT color="green">530</FONT>                    source = conf;<a name="line.530"></a>
<FONT color="green">531</FONT>                }<a name="line.531"></a>
<FONT color="green">532</FONT>            }<a name="line.532"></a>
<FONT color="green">533</FONT>    <a name="line.533"></a>
<FONT color="green">534</FONT>            return source;<a name="line.534"></a>
<FONT color="green">535</FONT>        }<a name="line.535"></a>
<FONT color="green">536</FONT>    <a name="line.536"></a>
<FONT color="green">537</FONT>        /**<a name="line.537"></a>
<FONT color="green">538</FONT>         * Replaces the current in-memory configuration by the given one.<a name="line.538"></a>
<FONT color="green">539</FONT>         *<a name="line.539"></a>
<FONT color="green">540</FONT>         * @param config the new in-memory configuration<a name="line.540"></a>
<FONT color="green">541</FONT>         */<a name="line.541"></a>
<FONT color="green">542</FONT>        private void replaceInMemoryConfiguration(Configuration config)<a name="line.542"></a>
<FONT color="green">543</FONT>        {<a name="line.543"></a>
<FONT color="green">544</FONT>            if (!inMemoryConfigIsChild)<a name="line.544"></a>
<FONT color="green">545</FONT>            {<a name="line.545"></a>
<FONT color="green">546</FONT>                // remove current in-memory configuration<a name="line.546"></a>
<FONT color="green">547</FONT>                configList.remove(inMemoryConfiguration);<a name="line.547"></a>
<FONT color="green">548</FONT>            }<a name="line.548"></a>
<FONT color="green">549</FONT>            inMemoryConfiguration = config;<a name="line.549"></a>
<FONT color="green">550</FONT>        }<a name="line.550"></a>
<FONT color="green">551</FONT>    <a name="line.551"></a>
<FONT color="green">552</FONT>        /**<a name="line.552"></a>
<FONT color="green">553</FONT>         * Adds the value of a property to the given list. This method is used by<a name="line.553"></a>
<FONT color="green">554</FONT>         * {@code getList()} for gathering property values from the child<a name="line.554"></a>
<FONT color="green">555</FONT>         * configurations.<a name="line.555"></a>
<FONT color="green">556</FONT>         *<a name="line.556"></a>
<FONT color="green">557</FONT>         * @param dest the list for collecting the data<a name="line.557"></a>
<FONT color="green">558</FONT>         * @param config the configuration to query<a name="line.558"></a>
<FONT color="green">559</FONT>         * @param key the key of the property<a name="line.559"></a>
<FONT color="green">560</FONT>         */<a name="line.560"></a>
<FONT color="green">561</FONT>        private static void appendListProperty(List&lt;Object&gt; dest, Configuration config,<a name="line.561"></a>
<FONT color="green">562</FONT>                String key)<a name="line.562"></a>
<FONT color="green">563</FONT>        {<a name="line.563"></a>
<FONT color="green">564</FONT>            Object value = config.getProperty(key);<a name="line.564"></a>
<FONT color="green">565</FONT>            if (value != null)<a name="line.565"></a>
<FONT color="green">566</FONT>            {<a name="line.566"></a>
<FONT color="green">567</FONT>                if (value instanceof Collection)<a name="line.567"></a>
<FONT color="green">568</FONT>                {<a name="line.568"></a>
<FONT color="green">569</FONT>                    Collection&lt;?&gt; col = (Collection&lt;?&gt;) value;<a name="line.569"></a>
<FONT color="green">570</FONT>                    dest.addAll(col);<a name="line.570"></a>
<FONT color="green">571</FONT>                }<a name="line.571"></a>
<FONT color="green">572</FONT>                else<a name="line.572"></a>
<FONT color="green">573</FONT>                {<a name="line.573"></a>
<FONT color="green">574</FONT>                    dest.add(value);<a name="line.574"></a>
<FONT color="green">575</FONT>                }<a name="line.575"></a>
<FONT color="green">576</FONT>            }<a name="line.576"></a>
<FONT color="green">577</FONT>        }<a name="line.577"></a>
<FONT color="green">578</FONT>    }<a name="line.578"></a>




























































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